A restraint system includes a seat defining a centerline and including a seat bottom and a seatback. A pair of upper retractors are disposed on the seatback, a pair of lower retractors are disposed on the seat bottom, and a pair of middle retractors are disposed on the seat between the pairs of upper and lower retractors. Each pair of retractors includes one retractor disposed on each side of the centerline.

A dual-web retractor includes a frame having spaced-apart sidewalls, a spool rotatably mounted between the sidewalls, a pair of engagement members configured to be releasably engaged to one another, and a single web having opposite ends each coupled to a different one of the pair of engagement members and a portion of the single web between the opposite ends affixed to the spool to define a first web section extending from one end of the frame between the spool and one of the pair of engagement members and a second web section extending from an opposite end of the frame between the spool and the other of the pair of engagement members. Rotation of the spool in a web take up direction alternatingly wraps the web sections onto the spool and rotation of the spool in a web pay out direction alternatingly unwraps the web sections from the spool.

A dual-web retractor includes a frame having spaced-apart sidewalls, a spool rotatably mounted between the sidewalls, a pair of engagement members configured to be releasably engaged to one another, and a single web having opposite ends each coupled to a different one of the pair of engagement members and a portion of the single web between the opposite ends affixed to the spool to define a first web section extending from one end of the frame between the spool and one of the pair of engagement members and a second web section extending from an opposite end of the frame between the spool and the other of the pair of engagement members. Rotation of the spool in a web take up direction alternatingly wraps the web sections onto the spool and rotation of the spool in a web pay out direction alternatingly unwraps the web sections from the spool.

A seat belt retractor including a spool and a measurement mechanism for determining a measure of the amount of seat belt webbing unwound from the spool. The measurement mechanism includes cycloidal gear transmission. A sensor is provided for detecting movement of a magnet mounted on a sensing gear and a controller may be provided for determining a measure indicating the amount of rotation of the spool and the amount of webbing withdrawal based on the movement of the magnet.

A retainer apparatus including a first retainer portion, a second retainer portion, and a sensor comprising a motion detector and an alarm. The retainer apparatus includes the first retainer portion configured to be slidably attached to a first harness strap and a second retainer portion configured to be slidably attached to a second harness strap. The first retainer portion is removably attached to the second retainer portion. The motion detector is configured to detect movement of the retainer apparatus and activate the alarm to alert a user in a vehicle if movement of the retainer apparatus is detected.

A retainer apparatus including a first retainer portion, a second retainer portion, and a sensor comprising a motion detector and an alarm. The retainer apparatus includes the first retainer portion configured to be slidably attached to a first harness strap and a second retainer portion configured to be slidably attached to a second harness strap. The first retainer portion is removably attached to the second retainer portion. The motion detector is configured to detect movement of the retainer apparatus and activate the alarm to alert a user in a vehicle if movement of the retainer apparatus is detected.

Provided are a seat belt retractor and a seat belt device capable of suppressing an increase in frictional resistance when a pretensioner is steadily driven and increasing the resistance to be applied to a webbing when energy is absorbed. A seat belt retractor includes a guide member facing at least a part of an outer circumferential surface of a locking base and disposed along an opening portion. The guide member is configured not to come into contact with the locking base until a pretensioner is shifted to a steady driving state, is configured to come into contact with the locking base when the pretensioner is steadily driven, and is configured to allow contact between lock teeth and the locking base when subjected to a predetermined load after the pretensioner is shifted to the steady driving state.

Provided are a seat belt retractor and a seat belt device capable of suppressing an increase in frictional resistance when a pretensioner is steadily driven and increasing the resistance to be applied to a webbing when energy is absorbed. A seat belt retractor includes a guide member facing at least a part of an outer circumferential surface of a locking base and disposed along an opening portion. The guide member is configured not to come into contact with the locking base until a pretensioner is shifted to a steady driving state, is configured to come into contact with the locking base when the pretensioner is steadily driven, and is configured to allow contact between lock teeth and the locking base when subjected to a predetermined load after the pretensioner is shifted to the steady driving state.

A vehicle seat belt assembly having a seat belt retractor with a spool rotatable with respect to a retractor frame, the spool storing a seat belt webbing wrapped thereon. The retractor also includes a primary locking mechanism for selectively locking the spool with respect to the retractor frame to provide vehicle occupant restraint. The retractor further includes an auxiliary locking mechanism for selectively locking the spool with respect to the retractor frame upon a predetermined restraint load acting on the spool.

A vehicle seat belt assembly having a seat belt retractor with a spool rotatable with respect to a retractor frame, the spool storing a seat belt webbing wrapped thereon. The retractor also includes a primary locking mechanism for selectively locking the spool with respect to the retractor frame to provide vehicle occupant restraint. The retractor further includes an auxiliary locking mechanism for selectively locking the spool with respect to the retractor frame upon a predetermined restraint load acting on the spool.